EP 2699943 A4 20150923 - MULTICOMPONENT BOREHOLE RADAR SYSTEMS AND METHODS
Title (en)
MULTICOMPONENT BOREHOLE RADAR SYSTEMS AND METHODS
Title (de)
MEHRKOMPONENTEN-BOHRLOCHRADARSYSTEME UND VERFAHREN
Title (fr)
SYSTÈMES ET PROCÉDÉS UTILISANT DES RADARS À COMPOSANTS MULTIPLES POUR PUITS DE FORAGE
Publication
Application
Priority
US 2011032865 W 20110418
Abstract (en)
[origin: WO2012144977A1] Disclosed herein are muUicoraponem borehole radar tools and methods. At least some tool embodiments employ at least two antennas that recei ve reflections of electromagnetic pulses transmitted from the tool. A processor processes the receive signals to identify reflection signals and to determine a direction and/or distance to the sources of the reflection signals. Possible sources include formation boundaries, fluid boundaries, eased wells, and other features that cause contrasts in electromagnetic properties, in addition, to reflection signals, the measured responses may include direct signal measurements that are useful for determining formation resistivity and permittivity. Each of the antennas may transmit and receive, and they may he collocated to reduce tool size and reduce processing complexity. Disclosed, logging tool, examples employ both electric and magnetic dipoie antennas.
IPC 8 full level
G01V 3/30 (2006.01)
CPC (source: EP US)
Citation (search report)
- [XYI] GB 2411729 A 20050907 - PATHFINDER ENERGY SERVICES INC [US]
- [A] US 2005093546 A1 20050505 - BANNING ERIK [US], et al
- [Y] WO 2010060040 A1 20100527 - HALLIBURTON ENERGY SERV INC [US], et al
- [Y] MICHAEL ZHDANOV ET AL: "Foundations of Tensor Induction Well-Logging", PETROPHYSICS, vol. 42, no. 6, December 2001 (2001-12-01), pages 588 - 610, XP055207299
- See references of WO 2012144977A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012144977 A1 20121026; AU 2011366229 A1 20131010; AU 2011366229 B2 20150528; CA 2831277 A1 20121026; CA 2831277 C 20170725; CN 103477247 A 20131225; CN 103477247 B 20170822; EP 2699943 A1 20140226; EP 2699943 A4 20150923; MY 167753 A 20180924; RU 2013143739 A 20150527; RU 2596909 C2 20160910; US 2014032116 A1 20140130; US 9562987 B2 20170207
DOCDB simple family (application)
US 2011032865 W 20110418; AU 2011366229 A 20110418; CA 2831277 A 20110418; CN 201180070241 A 20110418; EP 11863883 A 20110418; MY PI2013003441 A 20110418; RU 2013143739 A 20110418; US 201114111963 A 20110418